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Normas DIN – AENOR
DIN EN 12697-44:2017-09

DIN EN 12697-44:2017-09

Bituminous mixtures - Test methods for hot mix asphalt - Part 44: Crack propagation by semi-circular bending test; German and English version prEN 12697-44:2017 / Note: Date of issue 2017-08-18

Mélanges bitumineux - Méthodes d'essai pour mélange hydrocarboné à chaud - Partie 44: Propagation de fissure par essai de flexion d'un bloc semi-circulaire; Version allemande et anglaise prEN 12697-44:2017 / Attention: Date de parution 2017-08-18

Asphalt - Prüfverfahren für Heißasphalt - Teil 44: Bestimmung der Rissausbreitung mittels Halbzylinder-Biegeversuch; Deutsche und Englische Fassung prEN 12697-44:2017 / Achtung: Erscheinungsdatum 2017-08-18

Fecha Anulación:
2019-05 /Withdrawn
Equivalencias internacionales:

prEN 12697-44 (2017-09)

Relación con otras normas DIN:

Reemplazada por: DIN EN 12697-44:2019-05

Resumen:
This draft European Standard specifies the Semi-Circular Bending (SCB) test method to determine the tensile strength or fracture toughness of an asphalt mixture for the assessment of the potential for crack propagation. The results of the test can be used to calculate: - the maximum load that the material containing a notch (crack) can resist before failure; - when the presence of a notch is critical. It should be noted that the test only describes a method to determine the resistance to crack propagation of an asphalt mixture. The crack propagation phase describes the second part of failure mechanism during dynamic loading. The first phase, which is the crack initiation phase, is mainly covered by the fatigue test (EN 12697-24).
Keywords:
Asphalts, Bend testing, Bending strength, Bending stress, Carriageways, Construction, Construction materials, Crack tests, Crack-extension-resistance, Cracking, Definitions, Dispersion, Fracture toughness, Hot mix asphalts, Maximum load, Measurement, Measuring techniques, Mechanical properties, Notches, Road construction, Sample preparation, Surfacing (exterior spaces), Tensile strength, Test specimens, Testing, Three-point loading
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